The Arizona Diamondbacks announced that they appointed Blake Swihart for the assignment and selected the contract of the box player Joshua Rojas of Triple-A Reno.
The addition of Swihart has not worked for the Diamondbacks, who acquired the former highly promoted Red Sox receiver in April. The 27-year-old did not have a great opportunity to establish himself as a cap in Boston, and the same has been true in Arizona.
Swihart did not start a single game behind the plate as a member of the Diamondbacks, with whom he has hit a meager .136 / .186 / .273 in 70 plate appearances.
Overall, the 2011 first-round pick is just a .243 / .301 / .355 hitter on 696 Major League PA. For his part, Rojas, 25, is originally from Arizona and shows up less than two weeks after joining the team in his exchange with Houston for right-handed star Zack Greinke.
Rojas, who now ranks as the 29th overall Diamondbacks prospect on MLB.com, has cut an outstanding .332 / .418 / .606 with 23 home runs and 33 steals (43 attempts) in 479 turns at the Triple-A level this season.